[SciPy-dev] fftw3 support
fishburn at MIT.EDU
Thu Jun 9 15:49:11 CDT 2005
There is an annoying bug in fftw 2.1.*, fixed in fftw 3.0.1, which
causes rfftw to take several orders of magnitude longer for certain
inputs. This affects SciPy's fft of real arrays pretty severely - there
are benchmarks at:
The benchmarks are run with fftw 2.1.3 installed (debian's fftw-dev
package), but I've reproduced the results with 2.1.5.
Is fftw3 support planned at all for SciPy? I'd love to take this on,
provided that someone could provide a few pointers with the build
process and accept the changes. I've moved a few simple C fftw programs
from fftw2 to fftw3 and the transition isn't bad at all.
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